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wifi: carl9170: micro-optimize carl9170_tx_shift_bm()

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The function calls bitmap_empty() just before find_first_bit(). Both
functions are O(N). Because find_first_bit() returns >= nbits in case of
empty bitmap, the bitmap_empty() test may be avoided.

Signed-off-by: Yury Norov <yury.norov@gmail.com>
Acked-by: Christian Lamparter <chunkeey@gmail.com>
Link: https://patch.msgid.link/20250326155200.39895-1-yury.norov@gmail.com
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>
This commit is contained in:
Yury Norov
2025-03-26 11:51:58 -04:00
committed by Jeff Johnson
parent ac4e317a95
commit 08e3cc13b0
1 changed files with 1 additions and 2 deletions
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3
drivers/net/wireless/ath/carl9170/tx.c
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@@ -366,8 +366,7 @@ static void carl9170_tx_shift_bm(struct ar9170 *ar,
if (WARN_ON_ONCE(off >= CARL9170_BAW_BITS))
return;
if (!bitmap_empty(tid_info->bitmap, off))
off = find_first_bit(tid_info->bitmap, off);
off = min(off, find_first_bit(tid_info->bitmap, off));
tid_info->bsn += off;
tid_info->bsn &= 0x0fff;